In 2014, combined discharge from the eight largest Arctic rivers (2,487 km3) was 10% greater than average discharge for the period 1980-1989. Values for 2013 (2,282 km3) and 2012 (2,240 km3) were 1% greater than and 1% less than the 1980-1989 average, respectively. For the first seven months of 2015, the combined discharge for the six largest Eurasian Arctic rivers shows that peak discharge was 10% greater and five days earlier than the 1980-1989 average for those months.
Earth Systems Research Center
Arctic Report Card: Update for 2015
NOAA Arctice Program
Holmes R.M., A. I. Shiklomanov, S. E. Tank, J. W. McClelland, M. Tretiakov (2015) River Discharge, Arctic Report Card: Update for 2015